Incinerator with secondary combustion chamber for volatiles



MY 28, 1953 J. G. YGREEMEN 2,646,758

INCINERATOR WITH SECONDARY OMBUSTION CHAMBER FOR VOLATILES 2 Sets-Sheet 1 Filed July l, 1950 N @.f M m M6, QW Joy im,

INCINERATOR WITH SECONDARY'A COMBUSTION CHAMBER FOR VOLATILES Filed July l, 1950 July 28, 1953 J. G. GREEMEN I2 Sheets-Sheet 2 INVENTOA ./obw C5. ffMf/v Patented `uly 28, 1953 UNITED STATES PATENT OFFICE INCINERATOR WITH SECONDARY CMBUS- TION CHAMBER FOR VOLATILES John G. Greemen, Detroit, Mich.

Application July 1, 1950, Serial No. 171,643

11 Claims. 1 A

This invention relates to incinerators, and is a continuation-in-part of my prior applications Serial No. 5,423, filed January 30, 1948, and Serial No. 89,090, led April 22, 1949, both of which applications are now abandoned.

More specically, the object of the invention is to provide an incinerator including means adapted to eliminate or, at least, to reduce substantially the excessive smoke, fumes and odors. The presence of such odors and smoke is one of the objectionable features of the conventional incinerator now in use and presented a problem for a solution thereof. A more specific object of my invention is to provide an incinerator oi simple construction, inexpensive in cost, and yet capable f accomplishing to a practicable degree the purpose for which it has been designed.

Furtehr objects of my invention relate to the constuction and operation of my improved incinerator as more clearly set forth inthe accompanying drawings and Specication wherein:

Figure l is a perspective view of my incinerator.

Figure 2 is an enlarged vertical sectional view thereof on line 2-2 of Figure 1.

` Figure 3 is a vertical sectional view on line 3-3 of Figure 2.

Figure 4 is a transverse sectional view on line 4 4 of Figure 2.

Figure 5 is a fragmentary sectional View of a detail of construction on line 5-5 of Figure 2.

Figure 6 is a partly sectional view of another element included in the structure of my incinerator.

Figure 7 is a perspective View of a modified form of my incinerator.

Figure 8 is a vertical sectional view of the incinerator shown in Figure 7' on line 8-8 of Figure 7.

Figure 9 is a sectional view of said incinerator on line 9 9 of Figure 8.

Figure 10 is a vertical sectional view taken on` line Iii-I5 of Figure 9 and showing a special combustion chamber within the casing of said incinerator.

The incinerator as shown in Figures 1 through 6 includes an outer casing In made of sheet metal and lined with an asbestos lining II, Aand has the form of a large cylinder open at the bottom I2 and provided with a cover I3. The cover isV tor-t I5 made of sheet metal and including at its within the casing in a spaced 1 relation to the walls thereof is a cylindrical re-y upper rim an outwardly turned ange I1 as best shown in Figure 2. At its lower portion, the retort is held in its spaced relation to the casing by means of an annular spacer I8. The latter is best made of sheet metal in the form of a flat, circular ring. A large circular opening I8 in the bottom of the retort is closed, normally, by a sliding perforated grate I9 having straight sides 45 tting over underslug flanges 20 as best shown in Figures 2 and 4. A lug 46, aixed to said grate and terminating with a, handle 41, extends outwardly through slot 48 in the wall of the casing and permits manual operation of the sliding grate so as to uncover said circular opening I6 for purposes which will be speciiied hereinbelow.

Located centrally upon said grate I9 is a tube 2l open at bottom, closed at top, and being provided with a plurality of apertures 22 in the wall thereof. At its upper portion, close to said flange Il, the retort opens int-o an elbow 23 connected to a straight tube 24 extending downwardly and slanting towards the front of the incinerator as best shown in Figure 3, where, by means of another elbow 25, .Figure 2, it joins a straight, horizontally disposed metal tube 26. This is of special construction to form a heating chamber and is located on a line of a chord of the circular outline of the easing Ill as best shown in dotted lines in Figure 4. An elbow 25 at the opposite end of the tube 26 connects said lastnamed member with an upwardly extending pipe 21 leading to an elbow 28 on the inner side of the casing therefrom to an elbow 29 on the outer side of the casing and to a flue 30. A screen 3I covers the opening of the first-named elbow 23, said screen being located on the inner side of the retort l5.

Important details of construction of the tube or chamber 26 include bales 32 and 33 as shown in Figure 6. 'I'he baiiles, rising from the wall of the tube inwardly, have a purpose which will be described presently, the tube also being provided with a plurality of apertures 48 on the underside thereof. A gas burner 34, in the form of a straight pipe having a plurality of perforations 31 and 3S disposed in two rows along the length of the pipe as best shown in Figure 5, is located below said tube 26 in a parallel relation thereto.

theirvway out of the chamber, will pass through the mid-portion of said chamber, will be retarded by heated baffies 33, and will eventually reach the smokestack 1I. While in the chamber said gases will Ibe subjected to the heat of the flame released by nozzle 18 and as oxygen for combustionis needed, this will be supplied by said tube 80, opening just below the level of the inlet 69. It is herein this chamber 68 that matter .partly burned in receptacle 58 will be thoroughly consumed. While I have restricted myself in the specication to the use of gas as a heating medium, it will be understood that some other medium may be used, and that the incinerator may be just as effective when electrical heating means should be substituted for the gas burner shown by me.

What I claim is:

1. An incinerator comprising an outer casing, an inner receptacle for receiving contents to be burned positioned in spaced relation within said outer casing, said receptacle having a grate forming the bottom wall thereof and having an opening in the upper portion thereof, an outlet in said outer casing for conducting products of combustion away from said incinerator, a secondary combustion chamber having an inlet and an outlet, the inlet of said combustion chamber communicating with the opening in the upper portion of said receptacle and the outlet of said secondary combustion chamber communicating with the outlet in said outer casing, said combustion chamber having a downwardly extending portion from the inlet thereof and having another portion extending adjacent said grate and communicating with the outlet thereof, means for supplying a flame to said grate for combustion of the material in said receptacle, and means for supplying a separate flame to said secondary combustion chamber, means for supplying primary air to the grate for effecting combustion of the material in the receptacle and means for supplying secondary air to said secondary combustion chamber for effecting combustion of the ignitable gases and other products of combustion flowing through the combustion chamber to said incinerator outlet.

2. An incinerator comprising an outer casing, an inner receptacle for receiving contents to be burned positioned in spaced relation within said outer casing, said receptacle having a tiltable grate forming the bottom wall thereof and having an opening in the upper portion thereof, an outlet in said outer casing for conducting products of combustion away from said incinerator, a secondary combustion chamber having an inlet and an outlet, the inlet of said combustion chamber communicating with the opening in the upper portion of said receptacle and the outlet of said secondary combustion chamber communicating with the outlet in said outer casing, said combustion chamber having a downwardly extendingl portion from the inlet thereof and having another portion extending adjacent said grate and communicating with the outlet thereof, means for supplying a flame to said grate for combustion of the material in said receptacle, and means for supplying a separate flame to said secondary combustion chamber, means for supplying pri-l mary air to the grate for effecting combustion of the material in the receptacle and means for supplying secondary air to said Secondary combustion chamber for effecting combustion ofthe ignitable gases and other products of combustionV flowing through the combustion chamber to said incinerator outlet. y

1 3. An incinerator comprising an outer casing, Ian inner receptacle for receiving contents to be burned positioned in spaced relation within said outer casing, said receptacle having a grate forming the bottom wall thereof and having an opening in the upper portion thereof, a hollow upright member mounted upon the upper side of the grate and communicating with the space below the grate provided with a plurality of apertures for feeding air from below the grate to the inside of said receptacle, an outlet in said outer casing for conducting products of combustion away from said incinerator, a secondary combustion chamber having an inlet and an outlet, the inlet of said combustion chamber communicating with the opening in the upper portion of said receptacle and the outlet of said secondary combustion chamber communicating with the outlet in said casing, said combustion chamber having a downwardly extending portion from the inlet thereof and having another portion extending adjacent said grate and communicating with the outlet thereof, means for supplying a flame to said grate for combustion of the material in said receptacle, and means for supplying a separate flame to said secondary combustion chamber, means for supplying primary air to the grate for effecting combustion of the material in the receptacle and means for supplying secondary air to said secondary combustion chamber for effecting combustion of the ignitable gases and other products of combustion flowing through the combustion chamber to said incinerator outlet.

4. An incinerator comprising an outer casing, an inner receptacle for receiving contents to be burned positioned in spaced relation within said outer casing, said receptacle having a tiltable grate forming the bottom wall thereof and having an opening in the upper portion thereof, a hollow upright member mounted upon the upperside of the grate and communicating with the space below thegrate provided with a plurality of apertures for feeding air from below the grate to the inside of said receptacle, an outlet in said outer casing for conducting products of combustion away from said incinerator, a secondary combustion chamber having an inlet and an outlet, the inlet of said combustion chamber communicating with the opening in the upper portion of said receptacle and the outlet of said secondary combustion chamber communicating with the outlet in said outer casing, said combustion chamber having a downwardly extending portion from the inlet thereof and having another portion extending adjacent said grate and communicating with the outlet thereof, means for supplying a flame to said grate for combustion of the material in said receptacle, and means for supplying a separate flame to said secondary combustion chamber, means for supplying primary air to the grate for effecting combustion of the material in the receptacle and means for supplying secondary air to said secondary combustion chamber for effecting combustion of the ignitable gases and other products of combustionfiowing through the combustion chamber to said incinerator outlet.

5.Y An incinerator comprising an outer casing, an inner receptacle for receiving contents to be burned positioned in spaced relation within said outer casing, said receptacle having a grate forming the bottom wall thereof and having an opening in the upper portion thereof, an outlet ondary combustion chamber having an inlet and an outlet, the inlet of said secondary combustion chamber being positioned within the upper end of said outer casing and adjacent the portion of said side wall of said inner receptacle o open construction so as to receive the products of combustion passing from said inner receptacle through said side wall portion of open construction, the outlet of said secondary combustion chamber communicating with the outlet in said outer casing, said combustion chamber having a downwardly extending portion from the inlet thereof and having another portion extending adjacent said grate and communicating with the loutlet thereof, means for supplying a name to said grate and to said portion ci said combustion chamber extending adjacent said grate, means for supplying primary air to said grate for effecting combustion of the material in said receptacle, and means for supplying secondary air to said secondary combustion chamber for effecting the combustion of the ignitable gases and other products of combustion flowing through said combustion chamber to said outlet in said outer casing.

10. An incinerator comprising an outer casing, an inner receptacle for receiving the contents to be burned positioned in spaced relation within said outer casing, said receptacle having a grate forming the bottom wall thereof and having an opening in the upper portion thereof, said outer casing having an outlet therein for con-` ducting products of combustion away from said incinerator, a secondary combustion chamber having an inlet and an outlet, the inlet of said combustion chamber communicating with the opening in the upper portion of said receptacle and the outlet of said secondary combustion chamber communicating with the outlet in said outer casing, said combustion chamber having a downwardly extending portion from the inlet thereof and having another portion extending adjacent said grate and communicating with the outlet thereof, means for supplying a flame to said grate and to said portion of said combustion chamber extending adjacent said grate, means for supplying primary air to said grate for eiiecting combustion of the material in said receptacle, and means for supplying secondary air to said secondary combustion chamber for eiecting the combustion of the ignitable gases and other products or" combustion iiowing through said combustion chamber to said outlet in said outer casing.

11. The combination set forth in claim 10 wherein said portion of said combustion chamber which extends adjacent said grate is apertured, said means for supplying a name to said grate being arranged to direct a ame at the perorations in said grate and to said aperture in said combustion chamber.

JOHN G. GREEME-N.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 315,397 Engle Apr. 7, 1885 329,302 Engle Oct. 27, 1585 370,223 Vincent Sept. 20, 1887 1,275,651 Borge Aug. 13, 1918 1,528,816 Cummings Mar. 10, 1925 2,044,085 Laghetto June 16, 1936 1,995,723 VanDenburg Mar. 26, 1935 2,171,535 Berg Sept. 5, 1939 FOREIGN PATENTS Number Country Date 107,337 Germany Dec. 11, 1899 

